I am making objects with paper pulp and rice flour. Only a blender and some hot water is needed. There is no chemical neither dangerous tools involved. It needs few energy, it cost almost nothing to make, it is doable at home and it is sustainable. By mixing paper pulp and rice flour, I can create a clay like material that is water sensitive, which allows to change the shapes and fix the objects easily. It can eventually be waxed for adding a protective layer.